According to an article on VOX, The term guys is problematic
What is the official stance on this word for TWP?
IMHO this is the rather unpleasant fallout that occurs when one group of rule-obsessed people clashes with another group of rule-obsessed people.
It's just a perfect storm of persnickety-ness.
Using the word "guys" occasionally to refer to a mixed gender group of people isn't a problem, it's common usage for very informal scenarios. "Doubling-down" and using it repeatedly to the same audience in such a context after being told by someone that it isn't appropriate, that's a problem and that's what the CoC addresses.
There's better things for people to do than researching all possible edge-cases of the CoC and raising alarm about it. But if that's your thing, go ahead, knock yourself out, you'll be quite busy.
There’s no separate official stance when it comes to The Workplace. We follow the same stance as the rest of the network.
If you want to know the official guidelines for guys, gals, chaps, or any other gender-leading generic pronouns, then please refer to the CoC FAQ at Official FAQ on gender pronouns and Code of Conduct changes. Someone may have asked there (ask if no one has). The odds are you’ll be guided to use Y’all, folks, or some other friendly gender neutral term instead.